Soak the raisins in rum for 2-3 minutes. Mix the butter or margarine with the sugar until frothy and gradually add the eggs. Mix the flour with the cocoa powder, salt, baking soda and gingerbread spice and stir in. Then stir in the baked apple jam. Fold in the nuts and raisins.
Spread the gingerbread dough on a greased baking sheet and bake at 175 degrees for 20-30 minutes.
After cooling, decorate with chocolate icing and cut into small pieces.